Santos, Roberto Lorena de Barros, et al. “Quinoa (<i>Chenopodium quinoa< I>) Reaction to Herbicide Residue in a Brazilian Savannah Soil”. Pesquisa Agropecuaria Brasileira, vol. 38, no. 6, June 2003, pp. 771-6, doi:10.1590/S1678-3921.pab2003.v38.6635.